Tip
If you set Trigger Interval to 0, HART Command 119 is broadcast as soon as the alert is detected.
4. Set Retry Rate as desired.
Retry Rate controls the rate at which HART Command 119 is broadcast when event notification is
active.
• Default: 0.5 seconds
5. Set Maximum Update Time as desired.
Maximum Update Time controls the rate at which HART Command 119 is broadcast when event
notification is not active.
• Default: 60 seconds
9.2 Configure Modbus communications
Display Menu > Configuration > Inputs/Outputs > Channel E
ProLink III Device Tools > Configuration > Communications > Communications (Modbus)
Field Communicator Configure > Manual Setup > Inputs/Outputs > Channel E > Set Up RS-485 Port
Modbus communications parameters control Modbus communications with the transmitter.
Modbus support is implemented on the RS-485 physical layer via Channel E.
Important
Your device automatically accepts all connection requests within the following ranges:
• Protocol: Modbus RTU (8-bit) or Modbus ASCII (7-bit) unless Modbus ASCII Support is disabled
• Parity: odd or even
• Stop bits: 1 or 2
• Baud: 1200, 2400, 4800, 9600, 19200, 38400
You do not need to configure these communications parameters on the device.
Restriction
If you need to configure all Modbus parameters, you must use ProLink III. The display does not provide access
to Modbus ASCII Support or Additional Communications Response Delay. The Field Communicator
provides access only to Modbus Address.
Procedure
1. Enable or disable Modbus ASCII Support as desired.
The setting of this parameter controls the range of valid Modbus addresses for your device.
Modbus ASCII support
Available Modbus addresses
Disabled 1–127
Configuration and Use Manual Configure digital communications
MMI-20025166 March 2019
Configuration and Use Manual 171
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